Breton butter cake

Tags: cake, French, Lu
Quite elegant and plain. Nice eaten in thin slices with an autumnal fruit compote.
. Makes 21m cake. 12 steps
150g sugar   Whisk until white and doubled in volume   Line a 21cm cake tin. Spoon in the batter, give the tin a few sharp taps to remove air bubbles. Bake in a moderate oven 30 minutes
4 egg yolks
60ml sweet white wine
1 vanilla pod's seeds
200g plain flour sift   Lightly fold in, in two goes
1 teaspoon baking powder
225g lightly salted butter soften Whisk until it has the consistency of mayonnaise Deftly whisk in
4 egg whites   Whisk   Fold in, a third at a time
50g sugar   Sprinkle over, whisk until glossy
icing sugar   Cool, dust